Melsec Q Series - Mitsubishi Electric GOT2000 Series Connection Manual

4.2

MELSEC Q Series

This section explains the restrictions on the connection methods and other information applicable when the QCPU
redundant system is monitored by the GOT.
Control
system
(System A)
Tracking cable
Station No. 2
(remote I/O station)
When an error occurs in System A, System B switches from standby system to control system.
Standby
system
(System A)
Tracking cable
Station No. 2
(remote I/O station)
In a redundant system, the monitoring can be performed with the monitoring target specified as the control system or the
standby system on the GOT. By specifying the monitoring target PLC CPU as the control system of the redundant system,
the monitoring target is automatically changed to the PLC CPU in the control system when system switching occurs.
To enable this automatic changing of the monitoring target at the GOT, settings are required in the GT Designer3.
➠
4.3MELSEC Redundant Setting
Monitor
target
Station No. 0
(Multiplexed remote master station)
MELSECNET/H remote I/O network
CPU direct
connection
Station No. 0
(Multiplexed remote master station)
MELSECNET/H remote I/O network
CPU direct
connection
Station No. 1
(Multiplexed remote sub master station)
Standby
system
(System B)
The GOT monitors
the control system
GOT
PLC CPU.
Monitor target
Station No. 1
(Multiplexed remote sub master station)
The GOT monitors the PLC CPU
of the new control system after
GOT
system switching.
4.2 MELSEC Q Series
4
Control
system
(System B)
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